After reading JohnB's post about his mod, I had to do something similar to Sunny 14.. We bought the parts at Lowes (Another one of Kitty's Lowes "Fixes"!) and I took the time yesterday, to do it.
When I tried removing the plate that the plastic valve mounted to, the screws broke off. They were pretty rusted! I drilled out the holes and used 5/16" stainless bolts, to re-attach the plate.
Kitty didn't want an old style valve and decided on a quarter-turn. I drilled out the original valve's mounting hole and put the new valve in.
Here's the valve in it's place. I wanted a cap on it to keep critters out, but didn't want to have to keep spares on hand, for when one got misplaced. We got a small piece of chain and attached it to the mounting plate.
The chain is pretty long, so I wrap it around the valve for transport.
It works!
One thing I did not have to do, was tee off that line, to be able to draw water from the lowest part of the tank. The drain and supply holes in the tank, are both at the bottom edge of it. I'll get a pic of that later.
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